thank you for the additional info, everyone!
with encouragement from here I turned a little Belaire Bantam into a hand crank to take with me camping/fishing but I mostly found the wind and little patchwork pieces are not a match made in heaven, so I gifted it to a special cousin last weekend.
But I do love hand cranking, hence the 66 idea
In a windless window view!
edited to add: this treadle desk and machine were a gift from Dick Wrightman, the founder of treadleon, and I treasure it highly.